The strong desired signal will be mitigated due to ââ?¬Å?self-nullingââ?¬Â for the adaptive beam former, even if the array calibration is used.\nThe proposed methodology switches the models between phased array and adaptive array. In general, the system utilizes Frost\nadaptive beam forming. However, it will be switched to phased array if the ââ?¬Å?self-nullingââ?¬Â appears. According to the estimation of the\narray pattern at the direction of desired signal, we can determine if the ââ?¬Å?self-nullingââ?¬Â happens. The new approach is much easier to\nimplement compared with the various robust beam forming algorithms.
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